Refurbished means restored - made better, and to retighten, is simply to tighten again.

翻意味着——得更好，而重，就是再。

The three words were: recycled, refurbished and retighten.

这三个词是：回收、翻和重收。

We looked before at the word 'retighten', which means 'to tighten again'.

我们之前看过“retighten”这个词，意思是“再收”。